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<p class="details" style="font-style: italic; color: #777777;">
<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
started a new discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/775#note_110154238">doc/cha-gtls-app.texi</a>:
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<td class="diff-line-num new_line" data-linenumber="916" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC916" class="line" lang="plaintext">@funcref{gnutls_init}, and the @funcref{gnutls_handshake} function will</span>
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<td class="diff-line-num new_line" data-linenumber="917" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC917" class="line" lang="plaintext">return early, allowing the server to send data earlier.</span>
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<td class="diff-line-num new_line" data-linenumber="918" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC918" class="line" lang="plaintext"></span>
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<td class="diff-line-num new_line old" data-linenumber="919" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC918" class="line" lang="plaintext">Under TLS 1.3, when the server and client share a @acronym{PSK}, the</span>
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<pre style="margin: 0;">-<span id="LC919" class="line" lang="plaintext">client side can start transmitting application data during handshake.</span>
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<pre style="margin: 0;">-<span id="LC920" class="line" lang="plaintext">This is called zero round-trip time (0-RTT) mode, and the application</span>
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<pre style="margin: 0;">-<span id="LC921" class="line" lang="plaintext">data sent in this mode is called early data.</span>
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<pre style="margin: 0;">+<span id="LC919" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC920" class="line" lang="plaintext">@node Zero-roundtrip mode</span>
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<pre style="margin: 0;">+<span id="LC921" class="line" lang="plaintext">@subsection Zero-roundtrip mode</span>
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<pre style="margin: 0;">+<span id="LC922" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC923" class="line" lang="plaintext">Under TLS 1.3, when the client has already connected to the server and</span>
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<pre style="margin: 0;">+<span id="LC924" class="line" lang="plaintext">is resuming a session, it can start transmitting application data during</span>
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<pre style="margin: 0;">+<span id="LC925" class="line" lang="plaintext">handshake. This is called zero round-trip time (0-RTT) mode, and the</span>
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<pre style="margin: 0;">+<span id="LC926" class="line" lang="plaintext">application data sent in this mode is called early data. The client can</span>
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<pre style="margin: 0;">+<span id="LC927" class="line" lang="plaintext">send early data with @funcref{gnutls_record_send_early_data}.</span>
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<p dir="auto">Thank you, that's much more clear. One more question that I think it should be clarified in the text, is when should a client call this function? For example (according to my current understanding):</p>
<pre class="code highlight js-syntax-highlight plaintext" lang="plaintext" v-pre="true" style="background-color: #fff; font-family: monospace; font-size: 90%; -premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; margin: 0;"><code><span id="LC1" class="line" lang="plaintext">the client should call this function before calling gnutls_handshake() and after calling gnutls_session_set_data()</span></code></pre>
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